Specialized SpeedZone Sport Wireless

Specialized's SpeedZone Sport Wireless provides all the data you need to quantify your rides in a neat, cordless package. Its easy-to-read, double-line display lets you quickly check speed, mileage and a whole host of other important functions. Plus, the SpeedZone's easy calibration makes setup a breeze and its interface is incredibly intuitive so you can spend more time pounding out the miles than trying to figure out how far you've ridden.

I use the Speedzone to check my progress throughout the ride. For the functions it provides it gives me enough information to kept me on track. If your looking for information that a pro rider would need then you are going to have to upgrade. It is fairly accurate,on an 80k run it was out by 1/2 a Km. If you want simple this is a good bang for the buck.

There's no way to turn it off. That wouldn't be a problem for a wired speedometer, or if you *never* take it off the bike. But when not on the bike, this wireless version will think it's moving at an arbitrary speed between .1 and 80 mph when the little nodes are (a) touched by skin, (b) near a magnet, or (c) within a foot of a computer. If any of those things happen, any trip meter or odometer readings are then wrong.

I really liked this computer after initial installation. Was easy to set up and easy to use. After replacing the battery in the sensor computer performance has been very erratic. MPH is all over the map and mileage continues to accumulate after stopping